马蹄形纳米激光器的发光
Luminescence on the horseshoe nanolaser
摘要：
我们考虑了以纳米尺寸马蹄铁形式排列在有源电介质表面的层中的一组有序开口环银谐振器。马蹄形谐振腔的尺寸远小于入射光的波长。等离子体纳米谐振器从活性介质中获取能量，可以作为纳米激光器工作。我们表明，纳米激光泵浦应被视为一个随机的外力，因为在活性介质中的光子吸收的非相干量子力学过程。浸没在活性介质中的等离子体激元纳米谐振器的操作是对随机力作用的响应。找到了发光线，并预测了当活性介质反转增加到阈值时发光线向激光光谱的演化。通过改变马蹄铁的尺寸和形状，可以方便地调节马蹄铁的共振行为。结果与全量子力学模拟进行了比较。
英文摘要：
We considered the set of the ordered split-ring silver resonators in the form of nanosize horseshoes arranged in a layer at the surface of the active dielectric medium. The size of the horseshoe resonator is much less than the wavelength of the incident light. The plasmon nanoresonator takes energy from the active medium and can operate as a nanolaser. We show that nanoscale laser pumping should be treated as a random external force because of the incoherent quantum-mechanical process of photon absorption in the active medium. The operation of the plasmonic nanoresonator immersed in the active medium is the response to the action of random force. We find luminescence line and predict its evolution to the laser spectrum when inversion of the active medium is increased to the threshold value. The resonance behavior of the horseshoe can be conveniently tuned by variation of its size and shape. Results are compared with the full quantum mechanical simulation.
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